Madonna‘s 58th birthday was a couple days ago, on August 16th, but that didn’t stop the suddenly ever-present Britney Spears from wishing her pal a happy belated.

The Glory singer posted an Instagram video of herself dancing around to Madge’s 1990 hit “Vogue” with her niece while warming up for her Vegas Piece Of Me show. (Watch below.) Britney even engaged in a sword fight with the toddler, with the two of them using workout equipment as weapons.